Is less then half (2.5% of a 6%) commission fair for buyers agent?

[Carol Hopwood]

Before I sign the listing contract to sell our small MF property I'd love to get your opinion. The contract our agent presented has our (sellers) agent getting a 6% commission and a 2.5% for the Buyer's Agent. I thought anything less then a 50% split  (=3% in this case) would be disincentive for buyers agents. However our agent says that this % is very standard. "Some do 3% (of a 6% commission)- I've even had deals that were 2% ".  Are my concerns legit? that anything less then 50% split will be a disincentive?